Professor at School of Geographic Sciences, East China Normal University

Professor, Department of Geography, University of California at Santa Barbara

Professor Emeritus, Geography, The Ohio State University

Carbon Solutions LLC

Gorgan University of Agricultural Sciences and Natural Resources

Professor of Environmental Systems Management, Kent Business School, University of Kent

Arizona State University

East China Normal University

University of Newcastle (Australia) & University of Maryland (US)

Professor of Urban Analytics, Quantitative Geographer, University of Glasgow, Scotland, UK